Refractive Index Sensor for Liquids and Solids Using Dielectric Multilayer Films Deposited on Optical Fiber End Surface

被引：10
|
作者：
Kim, Kyung-Su [1 ]
Mizuno, Yosuke [1 ]
Nakano, Masayuki [2 ]
Onoda, Seiichi [2 ]
Nakamura, Kentaro [1 ]
机构：
[1] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan
[2] Watanabe Inc, R&D Div, Saitama 3380835, Japan
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 20期
基金：
日本学术振兴会;
关键词：
Bandpass filter; dielectric multilayer film; optical fiber sensor; refractive index sensor; INTERFEROMETER; GRATINGS;
D O I：
10.1109/LPT.2011.2163063
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We propose and demonstrate a novel fiber-optic refractive index (RI) sensor using dielectric multilayer thin films (DMFs) deposited on an optical fiber end surface, which rejects the incident light with particular wavelength. We experimentally show that the center frequency of the reflected light spectrum changes in proportion to the RI of six kinds of liquids attached to the fiber end. Its coefficient of +0.61 nm/RIU (refractive index unit) agrees well with our simulation results based on characteristic-matrix technique. We also show that this sensor is applicable to the RI measurement of solids.
引用
收藏
页码：1472 / 1474
页数：3
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